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Which one of the following non-metals is not a poor conductor of electricity

Which one of the following non-metals is not a poor conductor of electricity?

(a)

Sulphur

(b)

Selenium

(c)

Bromine

(d)

Phosphorus

Answer:

(b)

Easy

Explanation

Selenium is a non-metal with good electrical conductivity under light, making it an exception among non-metals.